It figures that I should start small when it comes to game design. The game will be about submarine commanders and bit like battleship, detecting the enemy will be the heavy component of the game. Considering that core experience will be based on WW1- WW2 era submarines, I think high tension game play where quick decisions and bit of luck will make all the difference.

Tried to avoid dice mechanic, but it is a cheaper and less time intensive than making custom cards. Air is going to be the currency, which was always important for submarines.